Centrifugal liquid-separator.



No. 707,82. Patented Aug. l9, I902. w. W. was".

CENTRIFUGAL LIQUID SEPABATOR. (Application filed Dec. 5. 1901.)

(N'u Model.) 2 Sheets-Sheet I [N VENT 0/? THE NOFIRIS PETERS c0. PHOTO-LUNG WASHINGTON. u. c. v

- Rat entail Aug. l9, |902.

W. W. MARSH. can'rmruam. uuuln SEPABADTOB.

I (Application filed Dec. 6. 1901.)

-NO Model.)

2 sham-sheet 2.

@mif/nmeol NITED STATES PATENT OFFICE.

WILBUR W. MARSH, F WATERLOO, IOWA, ASSIGNOR TO HACKETT & DAILEY CREAMERY SUPPLY COMPANY, OF WATERLOO, IOWA.

CENTRIFU GALl-LlQiU lD-SEPARATO R.

SPECIFICATION forming part of Letters Patent No. 707,132, dated August 19, 1902.

Application filed December 5, 1901. Serial No. 842,738. No model-l To all whom it may concern:

citizen of the United States of America, and a resident of Waterloo, Blackhawk; county," Iowa, have invented certain new 'and'useful Improvements in Centrifugal Liquid-Separators, of which the following isa specification.

My invention relates to improvements in liners for centrifugal liquid-separators,-and the object of my improvement is-to provide a liner so constructed as to more effectually separate the lighter from the heavier particles of a liquid by retardingthe'des'cent of such particles while under the influence of centrifugal force in the bowl of the separator; and the invention herein setforth is'an improvement upon the centrifugal liquid-separator patented under No. 677,092 on June 25, 1901, by Wilbur W. Marsh and Charles H. Hackett. This object I have generally efiected by the means shown, described, and claimed, as

- hereinafter set forth.

' the liner on the section indicated by thedot-.

ted lines a; m in Fig. 1. Fig. 3 is aplanview' of the under side of the bottom plate of theliner. Fig. 4 is a perspective View showing the parts partially withdrawn from the bowlf' Fig. 5 is an enlarged detail showing theseveral series of plates, partly in section and partly in elevation.

Similar numbers refer to similar parts throughout the several views.

15 represents a separator-bowl arranged to skim from the top through-the cream-exit 8, which latter is a tube extending from the interior of said bowl through an opening in the covering-plate 4 and through the top'of the cover 13 to the. exterior of said bowl. The said bowl 15 is also provided with the usual milk-outlets 17 17. A circular bottom plate 5, made of a sufficient diameter to be easily contained within the interior of said bowl, has a central orifice to allow the shaft of a connecting-rod12 to pass through it; The bottom of the plate'5 is supported a short distance above the bottom of the separator-bowl by means of radial ridges 6 6. An annular slo't'lo is recessed within the lower part of p p the inner periphery of the bowl for the pur- Be it known that I, WILBUR W. MARsH,-a

pose of allowing the heavier particles of liqiuid topass around and under the plate 5 to the exit 17. l

. My improved lineris composed of separable parts, each part being a series of superimposed plates in the form of surfaces of a truncated cone and said parts being concentrically arranged about each other, their axes coinciding with the axis of the separatorbowl. The plates of each series are inclined in the same direction to the horizontal diam: eter of the bowl. The plates of the next outer concentric series have an inclination in a reverse direction to that of the plates of the inner series, while'the plates of the outer series have the same inclination to the horizontal' diameter of the bowl as that of the inner series. The outer series of plates 20 are held together by the uprights 3v 3, which latter are attached to'the plates rigidly and rest upon the upper surface of the bottom plate 5. The

middle series of plates 19 are kept in position a inner series of plates 18 and the middle series ily-separated by successively removing the of plates 19, andthey may be replaced in the same order." Asu-fiioient space is provided between the axis of the bowl and the inner edgesofthe inner series of plates for the accommodation of the ascending column of the lighter particles of the liquid to be separated. The inner edges of the uprights l are notched, as at 7, at points just below the placejwh'ere the lower end of the cream-exit 8 opens into the interior of the bowl in orderlto allow the lighter particles of the liquid to more easily escape through said exit. 'A small space is left between the edges of each two series of plates and also between the outer edge of the connecting-rod 12 has been passed through it to allow the liquid to pass down through it from the upper chamber of the separator. The cream-exit S is permanently fixed within the covering-plate 4. An upper compartment of the separator is formed by means of the arched cover 13,bearing upon the coveringplate 4. Radial partitions divide this compartment, and an annular rubber 14 is compressed between the cover 13 and the covering-plate 4 to prevent egress of the liquid from between their edges. Openings are provided within the cover 13 to permit the cream-tube 8 and connecting-rod 12 to pass through them. The liner and the cover 13 are firmly fastened in place by means of the connecting-rod 12, which is passed through their respective central openings and the opening in the bottom plate 5 and screwed into the bottom of the bowl. The upper part of the connecting-rod 12 has a head containing a central chamber 10, having an upper milk-inlet 11. Openings 9 are placed within the sides of this head to permit the egress of milk when under centrifugal pressure.

The operation of the separator is thus described: The two parts composed of the series of plates 19 and 18 being successively introduced within the outer concentric series 20, the whole liner thus formed is placed within the separator-bowl 15, the covering-plate 4, cover 13, and connecting-rod 12 placed in position and the whole securely clamped together. The bowl being placed in rapid revolution, milk is introduced into the chamber 10 through the inlet 11 and under centrifugal pressure is sprayed through the openings 9 into the upper compartment of the separator. As the particles of milk forcibly strike the inner periphery of the cover 13 and its radial partitions the slime therein is separated and adheres to the walls of said compartment. The purified milk thence finds egress downward to the interior of the separator-bowl. Thence under the centrifugal pressure imparted to it it tends to be deflected toward the inner periphery of the bowl, at right angles to the vertical axis of the bowl. Its horizontal movement outward and its movement downward are obstructed, however, by the inclined surfaces of the concentrically-arranged plates 18, 19, and 20, which arrest the particles of the milk as they move outward and downward. The spaces left between the edges of the respective series of plates, as well as the space provided between the outer edges of the outer concentric series 20 and the inner periphery of the bowl, allow the separating liquids sufficient opportunity to move downward. The lighter particles will then return toward the inner cream zone, while the heavier particles will find their way toward the inner periphery of the bowl. A

partial separation of these constituents will ensue under the action of centrifugal force in any ordinary bowl unprovided with a liner; but owing to the swift descent of the liquid sufficient opportunity is not allowed for the proper separation of the infinitesimal light particles thereof, and they will escape through the outlets 17 in company with the heavier particles. It will readily be seen that the division of the descending current into numerous small portions moving up and down the inclined surfaces of the successive series of concentric plates will through friction and the retardation of the particles more thoroughly separate the lighter from the heavier particles. The smallest light particles will then ordinarily find a way to the inner cream zone along the under and upper sides of the series of inclined plates,and while the currents in the bowl which are created by centrifugal force are thus controlled the current is not permitted to continue long enough in one direction, owing to being broken against the apices of the angles of the plates, to draw the minuter particles into the blue-milk channel. A process of separation is thus set up and continued within the interior spaces of each of the concentric liners, the thorough separation bringing all the minuter particles to the cream zone, whence the cream or the current of lighter particles, if a component of some other liquid than milk, will be forced upward and pass from the separator-bowl through the creamoutlet 8. This form of liner thoroughly utilizes the full capacity of the interior of ,the bowl.

This form of construction not only makes the parts of the liner very strong on account of the mode in which the superimposed plates are attached to their uprights, but permits of their being easily placed together orseparated, as for cleaning or repair.

Having described myinvention,what I claim as new, and desire to secure by Letters Patent, is-

1. A liner for centrifugal liquid-separators, formed of separable parts arranged concentrically about and spaced from each other, each part being composed of a series of superimposed annular imperforate plates and uprights with which all the plates in a series are rigidly connected, a bowl, and top and bottom plates therein independently connected to certain of said uprights.

2. A liner for centrifugal liquid-separators, formed of separable parts arranged concentrically about and spaced from each other, each part being composed of a series of superimposed annular imperforate plates and uprights with which all the plates in a series are rigidly connected, a bowl, and top and bottom plates therein independently connected to the outermost and innermost uprights, while the intermediate uprights are unattached to either part.

3. A liner for centrifugal liquid-separators,

formed of separable parts arranged concen-.

trically about and spaced from each other, each part being composed of a series of superimposed annular imperforate parts formed in the shape of truncated cones, the plates of one series inclined at an angle to the plates of the series adjacent, uprights'along the edges of the plates in each series; and means for supporting said uprights.

4. A liner for centrifugal liquid-separators,

formed of separable parts arranged concentrically about and spaced'from each 'other,l

each part being composed of a series of superimposed annular plates connected rigidly to-' 10 gether by uprights, the outer series attached to a perforated bottom plate and the inner series attached to a perforated top platecontaining a cream-tube, substantially asjshown and described.

Signed at Waterloo, Iowa; this 30th day of I 5 

